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NXP Semiconductors LPC1225FBD48/321,1
- Part No.:
- LPC1225FBD48/321,1
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LPC1225FBD48/321,1.pdf
- Description:
- IC MCU 32BIT 80KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,110
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Product details
Overview
LPC1225FBD48/321 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller targeting industrial automation and embedded control applications. It operates at up to 45 MHz, integrates 80 kB flash and 8 kB SRAM, features a 10-bit 8-channel ADC, two analog comparators with programmable output feedback, and supports UART, I²C-Fast-mode Plus (1 Mbit/s), and SSP/SPI interfaces. It is used in smart metering systems for real-time energy measurement and communication.
For engineers reviewing the LPC1225FBD48/321 datasheet, LPC1225FBD48/321 pinout, LPC1225FBD48/321 application, or LPC1225FBD48/321 equivalent, key selection criteria include its 48-pin LQFP package, 39 GPIOs, IEC-60335 Class B-certified Windowed Watchdog Timer, 1 % internal oscillator for baud rate generation, and support for in-field programming via ISP/IAP with 512-byte flash page erase.
Technical Context
The LPC1225FBD48/321 implements the ARM Cortex-M0 core with Nested Vectored Interrupt Controller (NVIC) and Serial Wire Debug (SWD), delivering 1.51 CoreMark/MHz performance. Its clock system includes a 1–25 MHz crystal oscillator, 12 MHz ±1 % IRC oscillator, and PLL enabling full-speed CPU operation without high-frequency crystals.
Digital peripherals include a 21-channel micro-DMA controller, CRC engine, four general-purpose timers (two 32-bit, two 16-bit), and a 32-bit RTC. Analog resources comprise one 10-bit ADC with eight inputs and two flexible comparators whose outputs can trigger timer match signals or emulate 555 timer behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, up to 45 MHz - delivers deterministic real-time control with Thumb instruction set and 50 % higher code density vs. 8/16-bit MCUs. |
| Memory | 80 kB flash / 8 kB SRAM - supports robust firmware storage and runtime data handling; 512-byte flash page erase enables fine-grained EEPROM emulation. |
| ADC | 10-bit, 8-channel - provides sufficient resolution for sensor interfacing in industrial monitoring and white goods control. |
| Timers | Four GP timers (two 32-bit, two 16-bit) + RTC - enables precise timing, PWM generation, capture/compare, and calendar-based wake-up from deep-sleep modes. |
| Communication | 2× UART (one with RS-485/modem support), I²C-FM+ (1 Mbit/s), SSP/SPI - meets requirements for industrial networking and multi-protocol device interconnect. |
| Power Management | Sleep, Deep-sleep, Deep power-down modes; brownout detect with three thresholds - ensures reliable operation across varying supply conditions in factory environments. |
| Package | LQFP48, 7 × 7 × 1.4 mm - compact footprint suitable for space-constrained industrial control modules and metering PCBs. |
Pinout & Package
LQFP48 package: plastic low-profile quad flat package with 48 leads, body size 7 × 7 × 1.4 mm (SOT313-2). Pin count and layout optimized for industrial control designs requiring moderate I/O density and serial interface flexibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XTALIN / XTALOUT | Crystal oscillator input/output | Supports external 1–25 MHz crystal for stable system clock; essential for time-critical UART baud rate accuracy and RTC synchronization. |
| RESET/PIO0_13 | Reset input / GPIO | Active-low reset pin with internal pull-up; default function is reset - critical for safe initialization and recovery in alarm systems and eMetering. |
| SWDIO / SWCLK | Serial Wire Debug I/O and clock | Enables non-intrusive debugging and programming during development and field updates without dedicated JTAG pins. |
| PIO0_0–PIO0_29, PIO1_0–PIO1_6, PIO2_0–PIO2_15 | General-purpose I/O | 39 configurable GPIOs on LQFP48 variant - supports digital control, sensor readout, LED driving, and peripheral multiplexing via IOCONFIG registers. |
| VDD(3V3) / VSS | Core power / ground | 3.3 V supply referenced to internal regulator and ADC - defines operating voltage domain and analog reference stability. |
| RTCXIN / RTCXOUT | 32 kHz oscillator input/output | Connects to external 32.768 kHz crystal for battery-backed RTC operation - enables time-stamped logging and scheduled wake-up in deep power-down mode. |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based integer division | Hardware-accelerated 32-bit divide routines reduce flash usage and improve arithmetic determinism - critical for real-time control loops in lighting and motor drives. |
| Windowed Watchdog Timer (WWDT) | IEC-60335 Class B certified - satisfies functional safety requirements for household appliances and industrial alarm systems. |
| Programmable GPIO drive strength | Four high-current output drivers (e.g., PIO0_27, PIO0_28) support direct LED or relay driving - eliminates need for external buffer transistors in white goods UIs. |
| I²C Fast-mode Plus | 1 Mbit/s data rate with multiple address recognition and monitor mode - enables high-speed sensor hub communication in factory automation networks. |
| In-System Programming (ISP) | UART-based bootloader allows firmware updates over serial interface without debugger - simplifies remote maintenance in deployed eMetering units. |
Applications
| eMetering | Lighting Control |
|---|---|
Use Scenario: Smart electricity meter with real-time consumption monitoring, tamper detection, and PLC/GPRS communication. IC Role / Device Role / Timing Role: Main system controller executing metrology algorithms, managing UART/RS-485 communication, and triggering ADC sampling synchronized to line cycle. Use Value: 80 kB flash stores dual-application firmware (metering + comms); 10-bit ADC resolves sub-watt load changes; WWDT ensures fail-safe reset during power anomalies. | Use Scenario: DALI-compatible LED driver with dimming profile storage, thermal management, and fault reporting. IC Role / Device Role / Timing Role: Central MCU coordinating PWM dimming, temperature sensing via ADC, and DALI bus communication using UART with fractional baud rate generation. Use Value: 39 GPIOs support multiple LED channel controls and sensor inputs; 12 MHz IRC oscillator enables accurate DALI timing without external crystal. |
| Industrial Networking | Alarm Systems |
Use Scenario: Fieldbus gateway connecting Modbus RTU sensors to Ethernet backbone in factory automation. IC Role / Device Role / Timing Role: Protocol translation engine using UART for Modbus and SSP/SPI for local peripheral expansion, with DMA offloading serial transfers. Use Value: Micro-DMA controller handles concurrent UART and SPI traffic; I²C-FM+ supports fast configuration of local I/O expanders; 45 MHz CPU sustains real-time packet processing. | Use Scenario: Residential security panel with door/window contact monitoring, siren control, and GSM alert transmission. IC Role / Device Role / Timing Role: Low-power supervisory controller waking from Deep-sleep on contact interrupt, reading sensors, and initiating GSM UART transmission. Use Value: Deep power-down mode draws µA-level current; WAKEUP-capable pins (e.g., PIO1_3) enable instant response; RTC triggers periodic self-test without external timer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1224FBD48/121 | 48 kB flash, 4 kB SRAM, same peripherals and package - lower memory capacity. | Suitable for simpler control tasks without complex communication stacks or large data buffers. | Select when firmware size is under 40 kB and RAM usage remains below 3.5 kB. |
| LPC1226FBD48/301 | 96 kB flash, 8 kB SRAM, identical peripheral set and pinout - higher memory headroom. | Better suited for applications requiring OTA update partitioning or extended feature sets (e.g., encrypted boot). | Choose for future-proofing or when adding wireless protocol stacks increases code footprint beyond 80 kB. |
Compared with LPC1224FBD48/121 and LPC1226FBD48/301, the LPC1225FBD48/321 offers balanced memory (80 kB flash/8 kB SRAM) ideal for mid-tier industrial controllers where cost, code size, and feature depth must be tightly aligned - avoiding over-provisioning while supporting full I²C-FM+, dual UART, and WWDT certification.
Availability
LPC1225FBD48/321 is available at Aetrix Electronics and suitable for eMetering, lighting control, and industrial networking applications requiring stable component supply, long-term manufacturability, and industrial-grade reliability.
Supply support for LPC1225FBD48/321 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in ARM-based microcontrollers and RF technologies.
The LPC122x product line was designed for cost-sensitive, resource-constrained industrial control applications - emphasizing low-power operation, integrated analog peripherals, and certification-ready safety features like IEC-60335 Class B WWDT.
FAQ
What is the maximum operating frequency of the LPC1225FBD48/321?
The LPC1225FBD48/321 operates at a maximum CPU frequency of 45 MHz when fetching from flash with one wait state. At zero wait states, it runs up to 30 MHz. This frequency supports real-time control tasks in lighting and metering applications while maintaining low power consumption through ARM Cortex-M0 efficiency.
How many GPIO pins does the LPC1225FBD48/321 provide in its LQFP48 package?
The LPC1225FBD48/321 provides 39 General Purpose I/O pins in its LQFP48 package. These include configurable digital I/Os with programmable pull-up resistors, open-drain mode, glitch filtering, and four high-current output drivers - enabling direct interface with LEDs, relays, and sensors without external components.
Does the LPC1225FBD48/321 support in-field firmware updates?
Yes, the LPC1225FBD48/321 supports In-System Programming (ISP) and In-Application Programming (IAP) via its on-chip bootloader. Firmware updates can be performed over UART without requiring a debugger, making it suitable for remote maintenance in deployed eMetering and alarm system installations.
What analog peripherals are integrated into the LPC1225FBD48/321?
The LPC1225FBD48/321 integrates a 10-bit 8-channel ADC and two highly flexible analog comparators. Comparator outputs can be routed to timer match signals or used to emulate 555 timer behavior, supporting analog signal conditioning and threshold detection in lighting and industrial control applications.
Is the LPC1225FBD48/321 certified for safety-critical applications?
Yes, the LPC1225FBD48/321 includes an IEC-60335 Class B certified Windowed Watchdog Timer (WWDT), which meets functional safety requirements for household appliances and industrial equipment. This certification supports compliance efforts in white goods and alarm system designs requiring fail-safe behavior.
LPC1225FBD48/321,1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- LPC1200
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 45MHz
- Connectivity:
- I2C, IrDA, Microwire, SPI, SSI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, WDT
- Number of I/O:
- 39
- Program Memory Size:
- 80KB (80K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC1225FBD48/321,1 FAQ
1.How can I place an order for LPC1225FBD48/321,1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1225FBD48/321,1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LPC1225FBD48/321,1 reliable?
The price and inventory of LPC1225FBD48/321,1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1225FBD48/321,1 is usually 5 days.
3.What payment methods are accepted for LPC1225FBD48/321,1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1225FBD48/321,1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1225FBD48/321,1?
LPC1225FBD48/321,1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1225FBD48/321,1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LPC1225FBD48/321,1?
For technical support, including LPC1225FBD48/321,1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1225FBD48/321,1 requirements.
6.How does Aetrix verify that LPC1225FBD48/321,1 is sourced from the original manufacturer or authorized distributors?
All LPC1225FBD48/321,1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LPC1225FBD48/321,1 meets industry standards.
7.What is the process for return or replacement of LPC1225FBD48/321,1?
All LPC1225FBD48/321,1 units undergo pre-shipment inspection (PSI). If there is an issue with LPC1225FBD48/321,1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LPC1225FBD48/321,1 part is unused and in its original packaging.
Return procedure for LPC1225FBD48/321,1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC1225FBD48/321,1 Tags
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